Merge "DMAAP Listener for ORAN A1 Adapter Policy Mgmt"

[ccsdk/sli/northbound.git] / dmaap-listener / src / main / java / org / onap / ccsdk / sli / northbound / dmaapclient / SdncDmaapConsumer.java

diff --git a/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/SdncDmaapConsumer.java b/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/SdncDmaapConsumer.java
index ed71337..3fc769d 100644 (file)
--- a/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/SdncDmaapConsumer.java
+++ b/dmaap-listener/src/main/java/org/onap/ccsdk/sli/northbound/dmaapclient/SdncDmaapConsumer.java
@@ -2,8 +2,8 @@
  * ============LICENSE_START=======================================================
  * openECOMP : SDN-C
  * ================================================================================
- * Copyright (C) 2017 AT&T Intellectual Property. All rights
- *                     reserved.
+ * Copyright (C) 2017 - 2018 AT&T Intellectual Property. All rights
+ *                                             reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,137 +21,14 @@
 
 package org.onap.ccsdk.sli.northbound.dmaapclient;
 
-import com.att.nsa.mr.client.MRClientFactory;
-import com.att.nsa.mr.client.MRConsumer;
-import com.att.nsa.mr.client.response.MRConsumerResponse;
-import java.io.File;
-import java.io.FileInputStream;
 import java.util.Properties;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
-public abstract class SdncDmaapConsumer implements Runnable {
+public abstract interface SdncDmaapConsumer extends Runnable {
+    public abstract void init(Properties baseProperties, String consumerPropertiesPath);
 
-    private static final Logger LOG = LoggerFactory
-        .getLogger(SdncDmaapConsumer.class);
+    public abstract void processMsg(String msg) throws InvalidMessageException;
 
-    private String propertiesPath = "";
-    private Properties properties = null;
-    private MRConsumer consumer = null;
-    private MRConsumerResponse consumerResponse = null;
-    private boolean running = false;
-    private boolean ready = false;
-    private int fetchPause = 5000; // Default pause between fetch - 5 seconds
-    private int timeout = 15000; // Default timeout - 15 seconds
+    public abstract boolean isReady();
 
-    public SdncDmaapConsumer() {
-
-    }
-
-    public SdncDmaapConsumer(Properties properties, String propertiesPath) {
-        init(properties, propertiesPath);
-    }
-
-    public boolean isReady() {
-        return ready;
-    }
-
-    public boolean isRunning() {
-        return running;
-    }
-
-    public String getProperty(String name) {
-        return properties.getProperty(name, "");
-    }
-
-    public void init(Properties properties, String propertiesPath) {
-
-        this.propertiesPath = propertiesPath;
-
-        try (FileInputStream in = new FileInputStream(new File(propertiesPath))) {
-
-           LOG.debug("propertiesPath: " + propertiesPath);
-            this.properties = (Properties) properties.clone();
-            this.properties.load(in);
-
-
-            String timeoutStr = this.properties.getProperty("timeout");
-           LOG.debug("timeoutStr: " + timeoutStr);
-
-            if ((timeoutStr != null) && (timeoutStr.length() > 0)) {
-                timeout = parseTimeOutValue(timeoutStr);
-            }
-
-            String fetchPauseStr = this.properties.getProperty("fetchPause");
-           LOG.debug("fetchPause(Str): " + fetchPauseStr);
-            if ((fetchPauseStr != null) && (fetchPauseStr.length() > 0)) {
-                fetchPause = parseFetchPause(fetchPauseStr);
-            }
-           LOG.debug("fetchPause: " + fetchPause);
-
-
-            this.consumer = MRClientFactory.createConsumer(propertiesPath);
-            ready = true;
-        } catch (Exception e) {
-            LOG.error("Error initializing DMaaP consumer from file " + propertiesPath, e);
-        }
-    }
-
-    private int parseTimeOutValue(String timeoutStr) {
-        try {
-            return Integer.parseInt(timeoutStr);
-        } catch (NumberFormatException e) {
-            LOG.error("Non-numeric value specified for timeout (" + timeoutStr + ")");
-        }
-        return timeout;
-    }
-
-    private int parseFetchPause(String fetchPauseStr) {
-        try {
-            return Integer.parseInt(fetchPauseStr);
-        } catch (NumberFormatException e) {
-            LOG.error("Non-numeric value specified for fetchPause (" + fetchPauseStr + ")");
-        }
-        return fetchPause;
-    }
-
-
-    @Override
-    public void run() {
-        if (ready) {
-
-            running = true;
-
-            while (running) {
-
-                try {
-                    boolean noData = true;
-                    consumerResponse = consumer.fetchWithReturnConsumerResponse(timeout, -1);
-                    for (String msg : consumerResponse.getActualMessages()) {
-                        noData = false;
-                        LOG.info("Received message from DMaaP:\n" + msg);
-                        processMsg(msg);
-                    }
-
-                    if (noData) {
-                        pauseThread();
-                    }
-                } catch (Exception e) {
-                    LOG.error("Caught exception reading from DMaaP", e);
-                    running = false;
-                }
-            }
-        }
-    }
-
-    private void pauseThread() throws InterruptedException {
-        if (fetchPause > 0) {
-            LOG.info(String.format("No data received from fetch.  Pausing %d ms before retry", fetchPause));
-            Thread.sleep(fetchPause);
-        } else {
-            LOG.info("No data received from fetch.  No fetch pause specified - retrying immediately");
-        }
-    }
-
-    abstract public void processMsg(String msg) throws InvalidMessageException;
+    public abstract boolean isRunning();
 }